diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index f84efbe..108967f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -50,9 +50,9 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - "1.8"
+          - "lts" # automatically expands to the latest LTS release of Julia
           - "1" # automatically expands to the latest stable 1.x release of Julia
-          - "pre"
+          - "pre" # automatically expands to the latest pre-release of Julia
         os:
           - ubuntu-latest
         arch:
diff --git a/Project.toml b/Project.toml
index 6c8a8b9..f50bda7 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "ConstraintLearning"
 uuid = "4bd09668-9077-4be7-adc9-6307a490e6df"
 authors = ["azzaare <jf@baffier.fr> and contributors"]
-version = "0.1.8"
+version = "0.1.9"
 
 [deps]
 CompositionalNetworks = "4b67e4b5-442d-4ef5-b760-3f5df3a57537"
@@ -25,15 +25,15 @@ Constraints = "0.5"
 DataFrames = "1"
 Dictionaries = "0.4"
 Evolutionary = "0.11"
-Flux = "0.13, 0.14"
+Flux = "0.14"
 LocalSearchSolvers = "0.4"
 Memoization = "0.2"
 PrettyTables = "2"
 QUBOConstraints = "0.2"
-TestItemRunner = "0.2, 1"
-TestItems = "0.1, 1"
+TestItemRunner = "1"
+TestItems = "1"
 ThreadPools = "2"
-julia = "1.8"
+julia = "1.10"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
diff --git a/src/icn/cbls.jl b/src/icn/cbls.jl
index abb07e5..1fe08ec 100644
--- a/src/icn/cbls.jl
+++ b/src/icn/cbls.jl
@@ -91,8 +91,13 @@ function CompositionalNetworks.optimize!(
     @debug "pool" s.pool best_values(s.pool) best_values(s) s.pool.configurations
 
     # Return best values
-    best = BitVector(collect(best_values(s)))
-    weights!(icn, best)
+
+    if has_solution(s)
+        weights!(icn, BitVector(collect(best_values(s))))
+    else
+        CompositionalNetworks.generate_weights(icn)
+    end
+    best = weights(icn)
 
     return best, Dictionary{BitVector, Int}([best], [1])
 end